boost.sh

#===============================================================================
# Filename:  boost.sh
# Author:    Pete Goodliffe
# Copyright: (c) Copyright 2009 Pete Goodliffe
# Licence:   Please feel free to use this, with attribution
# Modified version
#===============================================================================
#
# Builds a Boost framework for the iPhone.
# Creates a set of universal libraries that can be used on an iPhone and in the
# iPhone simulator. Then creates a pseudo-framework to make using boost in Xcode
# less painful.
#
# To configure the script, define:
#    BOOST_LIBS:        which libraries to build
#    IPHONE_SDKVERSION: iPhone SDK version (e.g. 5.1)
#
# Then go get the source tar.bz of the boost you want to build, shove it in the
# same directory as this script, and run "./boost.sh". Grab a cuppa. And voila.
#===============================================================================

: ${BOOST_LIBS:="random regex graph random chrono thread signals filesystem system date_time"}
: ${IPHONE_SDKVERSION:=`xcodebuild -showsdks | grep iphoneos | egrep "[[:digit:]]+\.[[:digit:]]+" -o | tail -1`}
: ${OSX_SDKVERSION:=10.8}
: ${XCODE_ROOT:=`xcode-select -print-path`}
: ${EXTRA_CPPFLAGS:="-BOOST_SP_USE_SPINLOCK -std=c++11 -stdlib=libc++ -mno-thumb"}

# The EXTRA_CPPFLAGS definition works around a thread race issue in
# shared_ptr. I encountered this historically and have not verified that
# the fix is no longer required. Without using the posix thread primitives
# an invalid compare-and-swap ARM instruction (non-thread-safe) was used for the
# shared_ptr use count causing nasty and subtle bugs.
#
# Should perhaps also consider/use instead: -BOOST_SP_USE_PTHREADS

: ${TARBALLDIR:=`pwd`}
: ${SRCDIR:=`pwd`/src}
: ${IOSBUILDDIR:=`pwd`/ios/build}
: ${OSXBUILDDIR:=`pwd`/osx/build}
: ${PREFIXDIR:=`pwd`/ios/prefix}
: ${IOSFRAMEWORKDIR:=`pwd`/ios/framework}
: ${OSXFRAMEWORKDIR:=`pwd`/osx/framework}
: ${COMPILER:="clang++"}

: ${BOOST_VERSION:=1.55.0}
: ${BOOST_VERSION2:=1_55_0}

BOOST_TARBALL=$TARBALLDIR/boost_$BOOST_VERSION2.tar.bz2
BOOST_SRC=$SRCDIR/boost_${BOOST_VERSION2}

#===============================================================================
ARM_DEV_CMD="xcrun --sdk iphoneos"
SIM_DEV_CMD="xcrun --sdk iphonesimulator"
OSX_DEV_CMD="xcrun --sdk macosx"

ARM_COMBINED_LIB=$IOSBUILDDIR/lib_boost_arm.a
SIM_COMBINED_LIB=$IOSBUILDDIR/lib_boost_x86.a

#===============================================================================


#===============================================================================
# Functions
#===============================================================================

abort()
{
echo
echo "Aborted: $@"
exit 1
}

doneSection()
{
echo
echo "================================================================="
echo "Done"
echo
}

#===============================================================================

cleanEverythingReadyToStart()
{
echo Cleaning everything before we start to build...

rm -rf iphone-build iphonesim-build osx-build
rm -rf $IOSBUILDDIR
rm -rf $OSXBUILDDIR
rm -rf $PREFIXDIR
rm -rf $IOSFRAMEWORKDIR/$FRAMEWORK_NAME.framework
rm -rf $OSXFRAMEWORKDIR/$FRAMEWORK_NAME.framework

doneSection
}

#===============================================================================

downloadBoost()
{
if [ ! -s $TARBALLDIR/boost_${BOOST_VERSION2}.tar.bz2 ]; then
echo "Downloading boost ${BOOST_VERSION}"
curl -L -o $TARBALLDIR/boost_${BOOST_VERSION2}.tar.bz2 http://sourceforge.net/projects/boost/files/boost/${BOOST_VERSION}/boost_${BOOST_VERSION2}.tar.bz2/download
fi

doneSection
}

#===============================================================================

unpackBoost()
{
[ -f "$BOOST_TARBALL" ] || abort "Source tarball missing."

echo Unpacking boost into $SRCDIR...

[ -d $SRCDIR ]    || mkdir -p $SRCDIR
[ -d $BOOST_SRC ] || ( cd $SRCDIR; tar xfj $BOOST_TARBALL )
[ -d $BOOST_SRC ] && echo "    ...unpacked as $BOOST_SRC"

doneSection
}

#===============================================================================

restoreBoost()
{
cp $BOOST_SRC/tools/build/v2/user-config.jam-bk $BOOST_SRC/tools/build/v2/user-config.jam
}

#===============================================================================

updateBoost()
{
echo Updating boost into $BOOST_SRC...

cp $BOOST_SRC/tools/build/v2/user-config.jam $BOOST_SRC/tools/build/v2/user-config.jam-bk

cat >> $BOOST_SRC/tools/build/v2/user-config.jam <<EOF
using darwin : ${IPHONE_SDKVERSION}~iphone
: $XCODE_ROOT/Toolchains/XcodeDefault.xctoolchain/usr/bin/$COMPILER -arch armv6 -arch armv7 -arch armv7s -arch arm64 -fvisibility=hidden -fvisibility-inlines-hidden $EXTRA_CPPFLAGS
: <striper> <root>$XCODE_ROOT/Platforms/iPhoneOS.platform/Developer
: <architecture>arm <target-os>iphone
;
using darwin : ${IPHONE_SDKVERSION}~iphonesim
: $XCODE_ROOT/Toolchains/XcodeDefault.xctoolchain/usr/bin/$COMPILER -arch i386 -arch x86_64 -fvisibility=hidden -fvisibility-inlines-hidden $EXTRA_CPPFLAGS
: <striper> <root>$XCODE_ROOT/Platforms/iPhoneSimulator.platform/Developer
: <architecture>x86 <target-os>iphone
;
EOF

doneSection
}

#===============================================================================

inventMissingHeaders()
{
# These files are missing in the ARM iPhoneOS SDK, but they are in the simulator.
# They are supported on the device, so we copy them from x86 SDK to a staging area
# to use them on ARM, too.
echo Invent missing headers

cp $XCODE_ROOT/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator${IPHONE_SDKVERSION}.sdk/usr/include/{crt_externs,bzlib}.h $BOOST_SRC
}

#===============================================================================

bootstrapBoost()
{
cd $BOOST_SRC

BOOST_LIBS_COMMA=$(echo $BOOST_LIBS | sed -e "s/ /,/g")
echo "Bootstrapping (with libs $BOOST_LIBS_COMMA)"
./bootstrap.sh --with-libraries=$BOOST_LIBS_COMMA

doneSection
}

#===============================================================================

buildBoostForIPhoneOS()
{
cd $BOOST_SRC

# Install this one so we can copy the includes for the frameworks...
./bjam -j16 --build-dir=iphone-build --stagedir=iphone-build/stage --prefix=$PREFIXDIR toolset=darwin cxxflags="-stdlib=libc++ -std=c++11 -mno-thumb" architecture=arm target-os=iphone macosx-version=iphone-${IPHONE_SDKVERSION} define=_LITTLE_ENDIAN link=static stage
./bjam -j16 --build-dir=iphone-build --stagedir=iphone-build/stage --prefix=$PREFIXDIR toolset=darwin cxxflags="-stdlib=libc++ -std=c++11 -mno-thumb" architecture=arm target-os=iphone macosx-version=iphone-${IPHONE_SDKVERSION} define=_LITTLE_ENDIAN link=static install
doneSection

./bjam -j16 --build-dir=iphonesim-build --stagedir=iphonesim-build/stage -stdlib=libc++ --toolset=darwin-${IPHONE_SDKVERSION}~iphonesim architecture=x86 target-os=iphone macosx-version=iphonesim-${IPHONE_SDKVERSION} link=static stage
doneSection

./b2 -j16 --build-dir=osx-build --stagedir=osx-build/stage toolset=clang cxxflags="-std=c++11 -stdlib=libc++ -arch i386 -arch x86_64" linkflags="-stdlib=libc++" link=static threading=multi stage
doneSection
}

#===============================================================================

scrunchAllLibsTogetherInOneLibPerPlatform()
{
cd $BOOST_SRC

mkdir -p $IOSBUILDDIR/armv6/obj
mkdir -p $IOSBUILDDIR/armv7/obj
mkdir -p $IOSBUILDDIR/armv7s/obj
mkdir -p $IOSBUILDDIR/arm64/obj
mkdir -p $IOSBUILDDIR/i386/obj
mkdir -p $IOSBUILDDIR/x86_64/obj

mkdir -p $OSXBUILDDIR/i386/obj
mkdir -p $OSXBUILDDIR/x86_64/obj

ALL_LIBS=""

echo Splitting all existing fat binaries...

for NAME in $BOOST_LIBS; do
ALL_LIBS="$ALL_LIBS libboost_$NAME.a"

$ARM_DEV_CMD lipo "iphone-build/stage/lib/libboost_$NAME.a" -thin armv6 -o $IOSBUILDDIR/armv6/libboost_$NAME.a
$ARM_DEV_CMD lipo "iphone-build/stage/lib/libboost_$NAME.a" -thin armv7 -o $IOSBUILDDIR/armv7/libboost_$NAME.a
$ARM_DEV_CMD lipo "iphone-build/stage/lib/libboost_$NAME.a" -thin armv7s -o $IOSBUILDDIR/armv7s/libboost_$NAME.a
$ARM_DEV_CMD lipo "iphone-build/stage/lib/libboost_$NAME.a" -thin arm64 -o $IOSBUILDDIR/arm64/libboost_$NAME.a

$ARM_DEV_CMD lipo "iphonesim-build/stage/lib/libboost_$NAME.a" -thin i386 -o $IOSBUILDDIR/i386/libboost_$NAME.a
$ARM_DEV_CMD lipo "iphonesim-build/stage/lib/libboost_$NAME.a" -thin x86_64 -o $IOSBUILDDIR/x86_64/libboost_$NAME.a

$ARM_DEV_CMD lipo "osx-build/stage/lib/libboost_$NAME.a" -thin i386 -o $OSXBUILDDIR/i386/libboost_$NAME.a
$ARM_DEV_CMD lipo "osx-build/stage/lib/libboost_$NAME.a" -thin x86_64 -o $OSXBUILDDIR/x86_64/libboost_$NAME.a
done

echo "Decomposing each architecture's .a files"

for NAME in $ALL_LIBS; do
echo Decomposing $NAME...
(cd $IOSBUILDDIR/armv6/obj; ar -x ../$NAME );
(cd $IOSBUILDDIR/armv7/obj; ar -x ../$NAME );
(cd $IOSBUILDDIR/armv7s/obj; ar -x ../$NAME );
(cd $IOSBUILDDIR/arm64/obj; ar -x ../$NAME );
(cd $IOSBUILDDIR/i386/obj; ar -x ../$NAME );
(cd $IOSBUILDDIR/x86_64/obj; ar -x ../$NAME );

(cd $OSXBUILDDIR/i386/obj; ar -x ../$NAME );
(cd $OSXBUILDDIR/x86_64/obj; ar -x ../$NAME );
done

echo "Linking each architecture into an uberlib ($ALL_LIBS => libboost.a )"

rm $IOSBUILDDIR/*/libboost.a

echo ...armv6
(cd $IOSBUILDDIR/armv6; $ARM_DEV_CMD ar crus libboost.a obj/*.o; )
echo ...armv7
(cd $IOSBUILDDIR/armv7; $ARM_DEV_CMD ar crus libboost.a obj/*.o; )
echo ...armv7s
(cd $IOSBUILDDIR/armv7s; $ARM_DEV_CMD ar crus libboost.a obj/*.o; )
echo ...arm64
(cd $IOSBUILDDIR/arm64; $ARM_DEV_CMD ar crus libboost.a obj/*.o; )
echo ...i386
(cd $IOSBUILDDIR/i386;  $SIM_DEV_CMD ar crus libboost.a obj/*.o; )
echo ...x86_64
(cd $IOSBUILDDIR/x86_64;  $SIM_DEV_CMD ar crus libboost.a obj/*.o; )

rm $OSXBUILDDIR/*/libboost.a
echo ...osx-i386
(cd $OSXBUILDDIR/i386;  $SIM_DEV_CMD ar crus libboost.a obj/*.o; )

echo ...x86_64
(cd $OSXBUILDDIR/x86_64;  $SIM_DEV_CMD ar crus libboost.a obj/*.o; )
}

#===============================================================================
buildFramework()
{
: ${1:?}
FRAMEWORKDIR=$1
BUILDDIR=$2

VERSION_TYPE=Alpha
FRAMEWORK_NAME=boost
FRAMEWORK_VERSION=A

FRAMEWORK_CURRENT_VERSION=$BOOST_VERSION
FRAMEWORK_COMPATIBILITY_VERSION=$BOOST_VERSION

FRAMEWORK_BUNDLE=$FRAMEWORKDIR/$FRAMEWORK_NAME.framework
echo "Framework: Building $FRAMEWORK_BUNDLE from $BUILDDIR..."

rm -rf $FRAMEWORK_BUNDLE

echo "Framework: Setting up directories..."
mkdir -p $FRAMEWORK_BUNDLE
mkdir -p $FRAMEWORK_BUNDLE/Versions
mkdir -p $FRAMEWORK_BUNDLE/Versions/$FRAMEWORK_VERSION
mkdir -p $FRAMEWORK_BUNDLE/Versions/$FRAMEWORK_VERSION/Resources
mkdir -p $FRAMEWORK_BUNDLE/Versions/$FRAMEWORK_VERSION/Headers
mkdir -p $FRAMEWORK_BUNDLE/Versions/$FRAMEWORK_VERSION/Documentation

echo "Framework: Creating symlinks..."
ln -s $FRAMEWORK_VERSION               $FRAMEWORK_BUNDLE/Versions/Current
ln -s Versions/Current/Headers         $FRAMEWORK_BUNDLE/Headers
ln -s Versions/Current/Resources       $FRAMEWORK_BUNDLE/Resources
ln -s Versions/Current/Documentation   $FRAMEWORK_BUNDLE/Documentation
ln -s Versions/Current/$FRAMEWORK_NAME $FRAMEWORK_BUNDLE/$FRAMEWORK_NAME

FRAMEWORK_INSTALL_NAME=$FRAMEWORK_BUNDLE/Versions/$FRAMEWORK_VERSION/$FRAMEWORK_NAME

echo "Lipoing library into $FRAMEWORK_INSTALL_NAME..."
$ARM_DEV_CMD lipo -create $BUILDDIR/*/libboost.a -o "$FRAMEWORK_INSTALL_NAME" || abort "Lipo $1 failed"

echo "Framework: Copying includes..."
cp -r $PREFIXDIR/include/boost/*  $FRAMEWORK_BUNDLE/Headers/

echo "Framework: Creating plist..."
cat > $FRAMEWORK_BUNDLE/Resources/Info.plist <<EOF
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>English</string>
<key>CFBundleExecutable</key>
<string>${FRAMEWORK_NAME}</string>
<key>CFBundleIdentifier</key>
<string>org.boost</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundlePackageType</key>
<string>FMWK</string>
<key>CFBundleSignature</key>
<string>????</string>
<key>CFBundleVersion</key>
<string>${FRAMEWORK_CURRENT_VERSION}</string>
</dict>
</plist>
EOF

doneSection
}

#===============================================================================
# Execution starts here
#===============================================================================

mkdir -p $IOSBUILDDIR

cleanEverythingReadyToStart #may want to comment if repeatedly running during dev
restoreBoost

echo "BOOST_VERSION:     $BOOST_VERSION"
echo "BOOST_LIBS:        $BOOST_LIBS"
echo "BOOST_SRC:         $BOOST_SRC"
echo "IOSBUILDDIR:       $IOSBUILDDIR"
echo "OSXBUILDDIR:       $OSXBUILDDIR"
echo "PREFIXDIR:         $PREFIXDIR"
echo "IOSFRAMEWORKDIR:   $IOSFRAMEWORKDIR"
echo "OSXFRAMEWORKDIR:   $OSXFRAMEWORKDIR"
echo "IPHONE_SDKVERSION: $IPHONE_SDKVERSION"
echo "XCODE_ROOT:        $XCODE_ROOT"
echo "COMPILER:          $COMPILER"
echo

downloadBoost
unpackBoost
#inventMissingHeaders
bootstrapBoost
updateBoost
buildBoostForIPhoneOS
scrunchAllLibsTogetherInOneLibPerPlatform
buildFramework $IOSFRAMEWORKDIR $IOSBUILDDIR
buildFramework $OSXFRAMEWORKDIR $OSXBUILDDIR

restoreBoost

echo "Completed successfully"